Washington University officials issued an all-clear after reports of a possibly armed individual on campus prompted a temporary lockdown and a significant law enforcement response.

The university alerted students, faculty and staff earlier in the day to shelter in place after receiving information about a person believed to be carrying a weapon near campus grounds.

Emergency notifications instructed the campus community to avoid affected areas while local police and campus security conducted a coordinated search.

Authorities swept multiple buildings and surrounding spaces as a precaution.

After completing their search and determining there was no ongoing threat, university officials lifted the shelter-in-place order and announced that normal activities could resume.

No injuries were reported, and no arrests were immediately confirmed in connection with the incident.

University leaders thanked students and staff for following safety instructions promptly and emphasized that the alert system functioned as intended.

They also stated that counseling and support services would be available for those affected by the disruption.

Law enforcement officials said the investigation into the initial report remains ongoing as they work to determine the circumstances that triggered the alert.

Campus operations resumed under heightened awareness, with administrators reiterating their commitment to safety and transparent communication.